class_docstr: Test clone_index for various index combinations.
class_docstr_tok: ["Test","clone_index","for","various","index","combinations","."]
code: def test_IDMap(self):
      self.do_test_clone("IVF16,Flat,IDMap", with_ids=True)
  
file_path: faiss/tests/test_clone.py
imports: import unittest
  import faiss
  import numpy
  from faiss.contrib import datasets
label_desc: Use image node_id 6 for calling the TestClone obj's underlying member method code with example usage: obj.test_IDMap() without return types